CN110551387B - A kind of antistatic flame retardant thermoplastic polyurethane elastomer and preparation method thereof - Google Patents

Abstract

The invention belongs to the technical field of high polymer materials, and particularly relates to an antistatic flame-retardant thermoplastic polyurethane elastomer which comprises the following components in parts by mass: 40-70 parts of thermoplastic polyurethane elastomer, 5-20 parts of flame retardant, 2-10 parts of antistatic agent, 2-5 parts of compatilizer, 2-5 parts of plasticizer, 0.1-2 parts of antioxidant and 0.1-2 parts of lubricant; the flame retardant is melamine salt of pentaerythritol phosphate, graphite and nano metal hydroxide in a mass ratio of 3:2:5, the antistatic agent is a composite antistatic agent consisting of oil monostearate and ethoxylated amine, and the mass ratio of glycerol monostearate to ethoxylated amine is 4-7: 3 to 6. Compared with the prior art, the thermoplastic polyurethane elastomer provided by the invention has the advantages that the flame retardant property and the antistatic property are effectively improved while the mechanical property is not reduced. In addition, the invention also provides a preparation method of the antistatic flame-retardant thermoplastic polyurethane elastomer.

Description

A kind of antistatic flame retardant thermoplastic polyurethane elastomer and preparation method thereof

technical field

The invention belongs to the technical field of polymer materials, and in particular relates to an antistatic flame retardant thermoplastic polyurethane elastomer and a preparation method thereof.

Background technique

Thermoplastic polyurethane elastomer (TPU) is a special polymer material between plastic and rubber. It has good elasticity, wear resistance, low temperature resistance, oil resistance and tensile strength. It is often used to make casters, wires and cables. The sheath, seal, synthetic leather, shock-absorbing block, etc., can replace rubber, and injection molding machine or extruder can be used for molding, and the production process is clean, hygienic, environmentally friendly and pollution-free.

However, thermoplastic polyurethane elastomers, like most other polymeric materials, are flammable and fusible droplets that generate large amounts of fumes. Moreover, the volume resistivity of thermoplastic polyurethane elastomer reaches 10 ¹³ ~ 10 ¹⁵ Ω.cm ² , so static charges are easily accumulated on the surface of the polyurethane elastomer material, resulting in static electricity. The accumulation of static electricity can easily lead to short circuits, fires, and explosions in severe cases. . In order to improve the flame retardant properties and antistatic properties of thermoplastic polyurethane elastomers, the more effective measures at present are to add flame retardants and antistatic agents. Among them, the flame retardants work together through several mechanisms to prevent the thermoplastic polyurethane elastomer from burning. The antistatic agent forms a continuous conductive film with certain hygroscopicity and ionicity on the surface of the material, which reduces the surface resistivity and volume resistivity of the polyurethane elastomer, or the antistatic agent reduces the friction coefficient on the surface of the material, so that the The lubricity of the material surface is enhanced, thereby suppressing or reducing surface electrostatic charges.

However, whether it is adding flame retardants or antistatic agents, it also brings some serious problems, mainly in: poor compatibility between flame retardants and elastomers; flame retardants emit a large amount of toxic gases (such as HCl). , HCN, etc.), producing a large amount of smoke and releasing a large amount of corrosive substances; the addition of flame retardants and electrostatic agents causes the mechanical properties of polyurethane elastomers to decline; due to the existence of these problems, the use of polyurethane elastomers is largely limited. scope.

SUMMARY OF THE INVENTION

One of the objectives of the present invention is to provide an antistatic flame retardant thermoplastic polyurethane elastomer in view of the deficiencies of the prior art, which can effectively improve the flame retardant performance and antistatic property without reducing the mechanical properties of the elastomer.

In order to achieve the above object, the present invention adopts the following technical solutions:

An antistatic flame retardant thermoplastic polyurethane elastomer, comprising the following parts by mass: 40 to 70 parts of thermoplastic polyurethane elastomer, 5 to 20 parts of a flame retardant, 2 to 10 parts of an antistatic agent, and 2 to 5 parts of a compatibilizer , 2 to 5 parts of plasticizer, 0.1 to 2 parts of antioxidant and 0.1 to 2 parts of lubricant; wherein, the flame retardant is melamine salt of pentaerythritol phosphate with a mass ratio of 3:2:5, graphite and Nano metal hydroxide, the antistatic agent is a composite antistatic agent composed of oil monostearyl ester and ethoxylated amine, and the mass ratio of the glycerol monostearoyl ester and the ethoxylated amine is 4 to 7: 3 to 6.

As an improvement of the antistatic flame retardant thermoplastic polyurethane elastomer of the present invention, it comprises the following parts by mass: 50-60 parts of thermoplastic polyurethane elastomer, 10-15 parts of flame retardant, and 4-8 parts of antistatic agent , 3 to 4 parts of compatibilizer, 3 to 4 parts of plasticizer, 0.5 to 1 part of antioxidant and 0.5 to 1 part of lubricant.

As an improvement of the antistatic flame retardant thermoplastic polyurethane elastomer of the present invention, it comprises the following parts by mass: 55 parts of thermoplastic polyurethane elastomer, 12 parts of flame retardant, 6 parts of antistatic agent, and 3.5 parts of compatibilizer , 3.5 parts of plasticizer, 0.75 parts of antioxidant and 0.75 parts of lubricant.

As an improvement of the antistatic flame retardant thermoplastic polyurethane elastomer of the present invention, the nanometer metal hydroxide is nanometer aluminum hydroxide and/or nanometer magnesium hydroxide.

As an improvement of the antistatic flame retardant thermoplastic polyurethane elastomer of the present invention, the compatibilizer is polyethylene grafted maleic anhydride, EPDM rubber grafted maleic anhydride and polyolefin elastomer grafted Any of maleic anhydride.

As an improvement of the antistatic flame retardant thermoplastic polyurethane elastomer of the present invention, the plasticizer is dipropylene glycol dibenzoate, diethylene glycol dibenzoate, diethylene glycol dibenzoic acid ester, at least one of dimethyl adipate, diethyl adipate, dibutyl adipate, and dioctyl adipate.

As an improvement of the antistatic flame retardant thermoplastic polyurethane elastomer of the present invention, the antioxidant is tetrakis[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid]pentaerythritol , 4,4'-thiobis(6-tert-butyl-3-methylphenol), dilauryl thiodipropionate, pentaerythritol tetrakis(3-lauryl thiopropionate) and tri[2.4- At least one of di-tert-butylphenyl]phosphite.

As an improvement of the antistatic flame retardant thermoplastic polyurethane elastomer of the present invention, the lubricant is at least one of zinc stearate, hydroxy silicone oil, silicone powder and fluorine-containing lubricant.

Another object of the present invention is to provide a preparation method of the antistatic flame retardant thermoplastic polyurethane elastomer, comprising the following steps:

Step 1: Weigh the raw materials according to the parts by mass;

Step 2, adding the thermoplastic polyurethane elastomer into the mixer at 60-120°C, and stirring for 35-45min;

Step 3, stirring the flame retardant, antistatic agent, plasticizer, antioxidant and lubricant evenly at room temperature to obtain a modified mother liquor;

Step 4, the modified mother liquor obtained in step 3 is divided into 3 equal parts, the compatibilizer is also divided into 3 equal parts, and 1 part of modified mother liquor and 1 part of compatibilizer are added to the mixer of step 2 every 45min, During the adding process, the mixer kept stirring, and after all the adding was completed, stirring was continued for 3 hours to obtain an antistatic flame retardant thermoplastic polyurethane elastomer.

Compared with the prior art, the beneficial effects of the present invention are:

1) The antistatic flame-retardant thermoplastic polyurethane elastomer of the present invention adopts a composite flame retardant composed of a melamine salt of pentaerythritol phosphate, graphite and nano-metal hydroxide in a mass ratio of 3:2:5, wherein the pentaerythritol phosphate The melamine salt is a compound containing both phosphorus and nitrogen, which is equivalent to the compound use of phosphorus-based flame retardant and nitrogen-based flame retardant, which has a synergistic effect, so its flame retardant effect is obviously better than that of phosphorus alone. It is a flame retardant or nitrogen-based flame retardant. In addition, the addition of graphite and nano-metal hydroxide can also improve the flame retardant properties of thermoplastic polyurethane elastomers, thereby reducing the amount of flame retardants in the entire system and reducing the impact of flame retardants on the mechanical properties of thermoplastic polyurethane elastomers.

2) The antistatic flame retardant thermoplastic polyurethane elastomer of the present invention adopts a composite antistatic agent composed of glycerol monostearyl ester and ethoxylated amine, which is added in a small amount and has a good effect, which can greatly reduce the surface resistivity of the material, And it has little effect on the mechanical properties of thermoplastic polyurethane elastomer.

3) The antistatic flame retardant thermoplastic polyurethane elastomer of the present invention is added with a plasticizer and a compatibilizer, the plasticizer mainly improves the flexibility of the thermoplastic polyurethane elastomer, and the compatibilizer is to improve the flame retardant and antistatic agent Compatibility with the thermoplastic polyurethane elastomer, and the present invention is to add the compatibilizer and the modified mother liquor to the thermoplastic polyurethane elastomer in batches, so that the components can be more compatible, so that the to improve the mechanical properties.

Detailed ways

The present invention will be described in further detail below with reference to specific embodiments, but the embodiments of the present invention are not limited thereto.

Example 1

The preparation of antistatic flame retardant thermoplastic polyurethane elastomer includes the following steps:

Step 1, weigh 55 parts of thermoplastic polyurethane elastomer, 12 parts of flame retardant, 6 parts of antistatic agent, 3.5 parts of compatibilizer, 3.5 parts of plasticizer, 0.75 part of antioxidant and 0.75 part of lubricant; The fuel is melamine salt of pentaerythritol phosphate, graphite, nano-aluminum hydroxide and nano-magnesium hydroxide with a mass ratio of 3:2:2:3, and the antistatic agent is oil monostearoyl ester with a mass ratio of 6:4 and ethoxylated amine, the compatibilizer is polyethylene grafted maleic anhydride, the plasticizer is dipropylene glycol dibenzoate, and the antioxidant is tetrakis[β-(3,5-di-tert-butyl-4-hydroxyl) Phenyl) propionic acid] pentaerythritol ester, lubricant is zinc stearate;

Step 2, adding the thermoplastic polyurethane elastomer into the mixer at 60-120°C, and stirring for 35-45min;

Step 3, stirring the flame retardant, antistatic agent, plasticizer, antioxidant and lubricant evenly at room temperature to obtain a modified mother liquor;

Step 4, the modified mother liquor obtained in step 3 is divided into 3 equal parts, the compatibilizer is also divided into 3 equal parts, and 1 part of modified mother liquor and 1 part of compatibilizer are added to the mixer of step 2 every 45min, During the adding process, the mixer kept stirring, and after all the adding was completed, stirring was continued for 3 hours to obtain an antistatic flame retardant thermoplastic polyurethane elastomer.

Example 2

The difference from Example 1 is the composition of the antistatic flame retardant thermoplastic polyurethane elastomer: 40 parts of thermoplastic polyurethane elastomer, 5 parts of flame retardant, 2 parts of antistatic agent, 2 parts of compatibilizer, 2 parts of plasticizer, 0.1 part of oxygen agent and 0.1 part of lubricant; wherein, the flame retardant is melamine salt of pentaerythritol phosphate, graphite, nano aluminum hydroxide with a mass ratio of 3:2:5, and the antistatic agent is a mass ratio of 4:6 Oil monostearyl ester and ethoxylated amine, the compatibilizer is ethylene propylene rubber grafted maleic anhydride, the plasticizer is dimethyl adipate, and the antioxidant is 4,4'-thiobis( 6-tert-butyl-3-methylphenol), the lubricant is hydroxy silicone oil.

The rest are the same as in Embodiment 1, and are not repeated here.

Example 3

The difference from Example 1 is the composition of the antistatic flame retardant thermoplastic polyurethane elastomer: 50 parts of thermoplastic polyurethane elastomer, 10 parts of flame retardant, 4 parts of antistatic agent, 3 parts of compatibilizer, 3 parts of plasticizer, 0.5 part of oxygen agent and 0.5 part of lubricant; wherein, the flame retardant is melamine salt of pentaerythritol phosphate, graphite, nano-magnesium hydroxide with a mass ratio of 3:2:5, and the antistatic agent is a mass ratio of 5:5 Oil monostearyl ester and ethoxylated amine, compatibilizer is polyolefin elastomer grafted maleic anhydride, plasticizer is diethylene glycol dibenzoate and diethyl adipate, antioxidant is sulfur Dilauryl dipropionate, the lubricant is silicone powder.

The rest are the same as in Embodiment 1, and are not repeated here.

Example 4

The difference from Example 1 is the composition of the antistatic flame retardant thermoplastic polyurethane elastomer: 60 parts of thermoplastic polyurethane elastomer, 15 parts of flame retardant, 8 parts of antistatic agent, 4 parts of compatibilizer, 4 parts of plasticizer, 1 part of oxygen agent and 1 part of lubricant; wherein, the flame retardant is melamine salt of pentaerythritol phosphate with a mass ratio of 3:2:3:2, graphite, nano-aluminum hydroxide and nano-magnesium hydroxide, and the antistatic agent is Oil monostearyl ester and ethoxylated amine in a mass ratio of 7:3, compatibilizer is polyolefin elastomer grafted maleic anhydride, plasticizer is diethylene glycol dibenzoate and dibutyl adipate , the antioxidant is pentaerythritol tetrakis (3-lauryl thiopropionate), and the lubricant is a fluorine-containing lubricant.

The rest are the same as in Embodiment 1, and are not repeated here.

Example 5

The difference from Example 1 is the composition of the antistatic flame retardant thermoplastic polyurethane elastomer: 70 parts of thermoplastic polyurethane elastomer, 20 parts of flame retardant, 10 parts of antistatic agent, 5 parts of compatibilizer, 5 parts of plasticizer, 2 parts of oxygen agent and 2 parts of lubricant; wherein, the flame retardant is melamine salt of pentaerythritol phosphate, graphite, nano aluminum hydroxide and nano magnesium hydroxide with a mass ratio of 3:2:4:1, and the antistatic agent is Oil monostearyl ester and ethoxylated amine with mass ratio of 5.5:4.5, compatibilizer is polyethylene grafted maleic anhydride, plasticizer is dipropylene glycol dibenzoate and dioctyl adipate, antioxidant The agent is tri[2.4-di-tert-butylphenyl] phosphite, and the lubricant is zinc stearate and hydroxy silicone oil.

The rest are the same as in Embodiment 1, and are not repeated here.

Comparative Example 1

The preparation of antistatic flame retardant thermoplastic polyurethane elastomer includes the following steps:

Step 1, weigh 55 parts of thermoplastic polyurethane elastomer, 20 parts of tricresyl phosphate, 10 parts of sodium hexyl sulfonate, 3.5 parts of polyethylene graft maleic anhydride, 3.5 parts of dipropylene glycol dibenzoate, tetrakis [β- (3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] pentaerythritol ester 0.75 part and zinc stearate 0.75 part;

In step 2, the above raw materials are added to the mixer, and stirred for 5 hours to obtain an antistatic flame retardant thermoplastic polyurethane elastomer.

Comparative Example 2

What is different from Comparative Example 1 is the composition of the antistatic flame retardant thermoplastic polyurethane elastomer: 55 parts of thermoplastic polyurethane elastomer, 12 parts of flame retardant (melamine salt of pentaerythritol phosphate, graphite, nano-aluminum hydroxide and nano-magnesium hydroxide) The mass ratio is 3:2:2:3), 10 parts of sodium hexyl sulfonate, 3.5 parts of polyethylene grafted maleic anhydride, 3.5 parts of dipropylene glycol dibenzoate, tetrakis[beta-(3,5-di-tert-] 0.75 part of butyl-4-hydroxyphenyl) propionic acid] pentaerythritol ester and 0.75 part of zinc stearate.

The rest are the same as in Comparative Example 1, and will not be repeated here.

Comparative Example 3

What is different from Comparative Example 1 is the composition of the antistatic flame retardant thermoplastic polyurethane elastomer: 55 parts of thermoplastic polyurethane elastomer, 20 parts of tricresyl phosphate, and 6 parts of antistatic agent (mass of oil monostearate and ethoxylated amine). ratio of 6:4), 3.5 parts of polyethylene grafted maleic anhydride, 3.5 parts of dipropylene glycol dibenzoate, tetrakis[beta-(3,5-di-tert-butyl-4-hydroxyphenyl)propionic acid] 0.75 part of pentaerythritol ester and 0.75 part of zinc stearate.

The rest are the same as in Comparative Example 1, and will not be repeated here.

Comparative Example 4

The difference from Example 1 is that the flame retardants are melamine salt and graphite of pentaerythritol phosphate with a mass ratio of 3:2.

The rest are the same as in Embodiment 1, and are not repeated here.

Comparative Example 5

The difference from Example 1 is that the flame retardants are graphite, nano-aluminum hydroxide and nano-magnesium hydroxide with a mass ratio of 2:5.

The rest are the same as in Embodiment 1, and are not repeated here.

Comparative Example 6

The difference from Example 1 is that the flame retardants are melamine salt of pentaerythritol phosphate, nano-aluminum hydroxide and nano-magnesium hydroxide with a mass ratio of 3:2:3.

The rest are the same as in Embodiment 1, and are not repeated here.

Comparative Example 7

The difference from Example 1 is that the antistatic agent is oil monostearoyl ester and ethoxylated amine with a mass ratio of 2:8.

The rest are the same as in Embodiment 1, and are not repeated here.

Comparative Example 8

The difference from Example 1 is that the antistatic agent is oil monostearoyl ester and ethoxylated amine with a mass ratio of 8:2.

The rest are the same as in Embodiment 1, and are not repeated here.

Performance Testing

The following performance tests were performed on the thermoplastic polyurethane elastomers prepared in Examples 1 to 5 and Comparative Examples 1 to 8:

Tensile strength (MPa), refer to GB/T1040.2-2006 test, the tensile spline size is 150mm×10mm×4mm, and the tensile speed is 20mm/min;

Bending strength (MPa), refer to GB/T9341-2008 test, the size of the bending spline is 80mm×10mm×4mm, and the test speed is 2mm/min;

Smoke density (kg/m ³ ) was tested with reference to GB/T8627-2007, the sample size was 100mm×100mm×3mm, and the total smoke production (D4) within 0-4min was taken.

Oxygen index, refer to GB/T2406-2009 test, adopt end face ignition method, spline size is 80mm×10mm×4mm.

Surface resistivity (Ω), tested according to ASTM D4496 standard.

The test performance comparison is shown in Table 1.

Table 1 Test results

It can be seen from the test data in Table 1 that:

1) The surface resistivity of the thermoplastic polyurethane elastomer (Examples 1-5 and Comparative Examples 3-6) added with the antistatic agent of the present invention is all 10 ⁷ or 10 ⁸ Ω, which is significantly lower than that without the present invention. The thermoplastic polyurethane elastomer of the antistatic agent (Comparative Examples 1 to 2), and it can be seen from Example 1 and Comparative Examples 7 to 8 that when the mass of either oil monostearate and ethoxylated amine accounts for When the ratio is too high or too low, the antistatic effect achieved is obviously poor. That is to say, the thermoplastic polyurethane elastomer has better antistatic properties if and only if the oil monostearyl ester and ethoxylated amine in the mass ratio of 4-7:3-6 in the present invention are used.

2) The oxygen index of the thermoplastic polyurethane elastomer (Examples 1 to 5 and Comparative Examples 2, 7 to 8) added with the flame retardant of the present invention is higher than that of the thermoplastic polyurethane elastomer (Comparative Example) without the flame retardant of the present invention. 1, 3 to 6), and the smoke density of the thermoplastic polyurethane elastomer added with the flame retardant of the present invention is lower than that of the thermoplastic polyurethane elastomer without the flame retardant of the present invention. It can be seen from the ratios 4 to 6 that when any component of the flame retardant of the present invention is not added, the flame retardant effect achieved is also significantly poor, that is to say, if and only if the mass ratio in the present invention is 3 :2:5 melamine salt of pentaerythritol phosphate, graphite and nano metal hydroxide, thermoplastic polyurethane elastomer has better flame retardant properties.

3) The tensile strength and flexural strength of the thermoplastic polyurethane elastomers of Examples 1 to 5 are significantly lower than those of Comparative Examples 1 to 3, because the different preparation methods used in Examples 1 to 5 and Comparative Examples 1 to 3, In Examples 1 to 5, the compatibilizer and the modified mother liquor were added to the thermoplastic polyurethane elastomer in batches, while in Comparative Examples 1 to 3, all the raw materials were directly mixed and stirred. It can be seen that the preparation method of the present invention is more efficient. It is beneficial to improve the compatibility of flame retardant and antistatic agent with thermoplastic polyurethane elastomer and reduce the influence on its mechanical properties.

To sum up, through the compositions, proportions and preparation methods of the present invention, the flame retardancy and antistatic properties of the thermoplastic polyurethane elastomer can be effectively improved while the mechanical properties of the thermoplastic polyurethane elastomer are not decreased.

Based on the disclosure and teaching of the above specification, those skilled in the art to which the present invention pertains can also make changes and modifications to the above-described embodiments. Therefore, the present invention is not limited to the above-mentioned specific embodiments, and any obvious improvement, replacement or modification made by those skilled in the art on the basis of the present invention falls within the protection scope of the present invention. In addition, although some specific terms are used in this specification, these terms are only for convenience of description and do not constitute any limitation to the present invention.

Claims (8)

1. The antistatic flame-retardant thermoplastic polyurethane elastomer is characterized by comprising the following components in parts by mass: 40-70 parts of thermoplastic polyurethane elastomer, 5-20 parts of flame retardant, 2-10 parts of antistatic agent, 2-5 parts of compatilizer, 2-5 parts of plasticizer, 0.1-2 parts of antioxidant and 0.1-2 parts of lubricant; the flame retardant is melamine salt of pentaerythritol phosphate, graphite and nano metal hydroxide in a mass ratio of 3:2:5, the antistatic agent is a composite antistatic agent consisting of glycerol monostearate and ethoxylated amine in a mass ratio of 4-7: 3-6;

the preparation method of the antistatic flame-retardant thermoplastic polyurethane elastomer comprises the following steps:

step one, weighing raw materials in parts by weight;

step two, adding the thermoplastic polyurethane elastomer into a mixer at the temperature of 60-120 ℃, and stirring for 35-45 min;

uniformly stirring the flame retardant, the antistatic agent, the plasticizer, the antioxidant and the lubricant at normal temperature to obtain modified mother liquor;

and step four, evenly dividing the modified mother liquor obtained in the step three into 3 equal parts, evenly dividing the compatilizer into 3 equal parts, adding 1 part of modified mother liquor and 1 part of compatilizer into the mixer in the step two every 45min, keeping the mixer in a stirring state during the adding process, and continuing stirring for 3h after all the modified mother liquor and the compatilizer are added, so as to obtain the antistatic flame-retardant thermoplastic polyurethane elastomer.

2. The antistatic flame-retardant thermoplastic polyurethane elastomer according to claim 1, which comprises the following components in parts by mass: 50-60 parts of thermoplastic polyurethane elastomer, 10-15 parts of flame retardant, 4-8 parts of antistatic agent, 3-4 parts of compatilizer, 3-4 parts of plasticizer, 0.5-1 part of antioxidant and 0.5-1 part of lubricant.

3. The antistatic flame-retardant thermoplastic polyurethane elastomer according to claim 1, which comprises the following components in parts by mass: 55 parts of thermoplastic polyurethane elastomer, 12 parts of flame retardant, 6 parts of antistatic agent, 3.5 parts of compatilizer, 3.5 parts of plasticizer, 0.75 part of antioxidant and 0.75 part of lubricant.

4. The antistatic flame retardant thermoplastic polyurethane elastomer according to claim 1, wherein the nano metal hydroxide is nano aluminum hydroxide and/or nano magnesium hydroxide.

5. The antistatic flame retardant thermoplastic polyurethane elastomer according to claim 1, wherein the compatibilizer is any one of polyethylene grafted maleic anhydride, ethylene propylene diene monomer grafted maleic anhydride, and polyolefin elastomer grafted maleic anhydride.

6. The antistatic flame retardant thermoplastic polyurethane elastomer according to claim 1, wherein the plasticizer is at least one of dipropylene glycol dibenzoate, diethylene glycol dibenzoate, dimethyl adipate, diethyl adipate, dibutyl adipate and dioctyl adipate.

7. The antistatic flame retardant thermoplastic polyurethane elastomer according to claim 1, wherein the antioxidant is at least one of pentaerythrityl tetrakis [ β - (3, 5-di-t-butyl-4-hydroxyphenyl) propionate ], 4' -thiobis (6-t-butyl-3-methylphenol), dilauryl thiodipropionate, pentaerythrityl tetrakis (3-laurylthiopropionate) and tris [2, 4-di-t-butylphenyl ] phosphite.

8. The antistatic flame retardant thermoplastic polyurethane elastomer according to claim 1, wherein the lubricant is at least one of zinc stearate, hydroxy silicone oil, silicone powder, and fluorine-containing lubricant.